Following the record-breaking success of "Pirates of the Caribbean: Dead Man's Chest," Walt Disney Pictures is giving high-priority status to another potential adventure franchise based on a Disneyland ride. It is developing "Jungle Cruise," inspired by the ride in which parkgoers travel the jungle river guided by a riverboat skipper, encountering such wild creatures as piranhas and gorillas during their tour. The ride was one of the 22 original attractions when the park opened in 1955.